Cooking vessel



Dec. 6, 1938. J, A HASHEK 2,139,267

COOKING VESSEL Filed Jan. 11, 1957 Patented Dec. 6, 1938 i UNITED STATESPATENT OFFICE COOKING VESSEL John A. Hashek, Toronto, Ontario, Canada,assignor to' Jabez Blood, Toronto, Ontario, Canada Application January11, 1937, Serial No. 119,983 I In Canada November 25, 1936 g Claims.(Cl. 219-44) This invention relates to kettles or other cookbutinsulated therefrom are posts I! and i8, ing vessels of the typeprovided with its own each of which carry a spring switch blade clipheating means. There is, with this type of cookl9-2ll, which are adaptedto receive a blade 2| ing vessel, considerable danger of damage in thepivoted on a post 22 also depending from the 5 event that the vessel isnot supplied with liquid top of the base 1. The electric circuit is come5 or in the event of the liquid becoming exhausted. pleted by connectingthe other element lead to My object is to devise means for'automatlcallythe post l8, while a lead 23 connects the post il cutting off thecurrent to the heating element beand the terminal l6. fore any damagecan occur to the vessel itself. The blade 2| is provided with anoperating I attain my object by providing the cooking member 24 ofinsulating material. A spring 25 10 vessel with a switch, the movablemember of having one end connecting with this member 24 which is held incircuit-closing position by a and its other, end connected to a lug 26on the fusible element located in a position to be fused top of the baseI normally tends to move the should overheating occur in the vessel, andby switch blade to circuit breaking position as in- 16 providing meansfor automatically opening said dlcated in dotted lines in Fig. 2. Thistendency switch upon the fusing of said fusible element. of the spring,however, is resisted by a fusible The construction is hereinafter morespecificallink 21 having a hole adjacent each end, in one ly describedand illustrated in the accompanying of which is engaged ahook 28 on themember 24,

drawing in which-' I and in the other of which is engaged a hook or Fig.1 is a vertical section of a kettle constructarm 29 mounted on thevessel bottom 2 or other 20 ed in accordance with my inventionstationary part. 7

Fig. 2 a plan view of the under side of the In Fig. 4 I show a modifiedarrangement of kettle bottom; and switch and electric circuit. Theterminal i5 is Fig. 3 a detail in side elevation of the fusibleconnected by a bent strip 33 of flat conductor element mounting.directly to the pivot post 22 on which. the blade 25 Fig. 4 is a detailplan view of part of the under- 2| is pivoted. The 1 s and Clip are sideof the kettle bottom showing a modified pensed with and the circuit iscompleted by conarrangement of the switch. nectingone element lead 6 tothe post H, which In the drawing like numerals of reference incarriesthe blade engaging clip l8, while the so dicate corresponding parts inthe different other element lead is connected to the terminal 30figures. it. The strip 33 and also the blade 2i are pro- I indicates acooking vessel, which in the vided with enlarged bearing portions asshown to present case is shown as a kettle of which 2 is ins re a goodelectrical c nne i n. I the bottom. The bottom is shaped to form a ItWill be noted from 1 0f the drawing 35 hollow annular rib 3 projectingupwardly into that When the Water level falls below the pp 35 theinterior of the kettle and open at its underd e O the heating elementcas n two d stinct side. In this hollow annular rib is positioned bodiesof water are formed, the heating element the heating element 4, of which5 and 6 are the Casing forming the partition the ebe ween. For leads. Asfar as the present invention is con- P p which will hereinafter pp t scerned, any other type of heating element may be very desirable that oneof 'these compartments 40 employed for heating the liquid in the vessel.hold a greater quantity of liquid than the other.

Secured to the underside of the bottom 2 is a In the drawing theCompartment 32 w thin the hollow base I secured to the bottom 2 by abolt h at element is shown as f r at r pa ty 9. This base is shown asprovided with feet 8. than the surrounding compartment 31, and the Thebase is provided with a removable bottom ill post 29 which carries oneend of the fusible link 45 to form a closed chamber ii in the base. This2'! is attached directly to the bottom of the combottom in is held inplace by a bolt I: which is nartment of l ser p i y. I provided with anut Hi to assist in clamping the The operation of the apparatus is asfollows. base 1 to the bottom 2 and a second nut H to As long as bothcompartments of the vessel conhold the removable bottom ID in place.tain suillcient liquid there will not be sufficient Through the sideWall of the base 1 project heat in the chamber 1 to cause fusing of thelink terminals [5 and I6 of usual type to receive an d 21. Should theliquid level fall below the top of ordinary cord connection. the heatingelement, the liquid is divided into To the terminal I5 is connected theelement two parts. There being less liquid in the comlead 5. Dependingfrom the top of the base 1 partment 3| than in the compartment 32, the

liquid in the compartment 3| will be evaporated more quickly than thatin the compartment 32. As soon as the liquid in the compartment II isevaporated the bottom thereof will become highly heated, which heat istransmitted to the post 29 which is secured directly thereto, and causesthe fusing of the link 21 to allow the switch to open to break thecircuit. It will be noted that during this over-heating of the bottom ofthe compartment 3| there is still liquid in the compartment 32 and thisliquid is suflicient to prevent the kettle as a whole from becoming toohighly heated, and therefore the danger of damaging the kettle iseliminated. It will be noted that the top of the base is cut away asindicated at 30 for the passage of the leads 5 and 6 and this opening ismade suiiiciently large to permit the attachment of the post 29 directlyto the bottom of the smaller liquid compartment.

It Will be noted that the fusing of the link 21 is caused by excessivetemperature conditions within the base I and not by line conditions.

In the event of fusing of the link, it is a simple matter to remove thebottom cover l0 and substitute a fresh link.

From the above description it will be seen that I have devisedprotective means which will accomplish the object of my invention as setout in the preamble of this specification.

What I claim as my invention:

1. A cooking vessel having a liquid receiving chamber; a partitionextending upwardly from the bottom of said chamber dividing the lowerportion into two compartments, one of which is smaller than the other;electric heating means in said partition for simultaneously heating saidcompartments; and means for automatically cutting off said heating meanswhen said smaller compartment becomes dry.

2. A cooking vessel having a liquid receiving chamber; a partitionextending upwardly from the bottom of said chamber dividing the lowerportion into two compartments one of which is smaller than the other;electric heating means in said partition for simultaneously heating saidcompartments; a switch controlling said heating means; means normallytending to open the switch; a post secured to the bottom of. thecompartment of smaller capacity; and a iusible link connected at one endto said post and at the other end to the switch for retaining saidswitch closed.

3. A cooking vessel having a liquid receiving chamber, the bottom ofsaid chamber being bent upwardly to form a hollow partition, open to the.under side of said bottom; electric heating means in said partition; abase secured to the bottom of the chamber, said base being formed as ahousing having a closed top forming a closure for the greater part ofthe length of said partition; a switch in said. housing controlling theheating means; means normally tending to open the switch; a post securedto the bottom of the chamber at one side of said partition, the top ofthe base having an opening therein through which said post projects, anda fusible link in said housing connected at one end to said post and atthe other end to the switch for retaining said switch closed.

4. A cooking vessel having a liquid receiving chamber, the bottom ofsaid chamber being bent upwardly to form a hollow partition dividing thelower portion into two compartments, said partition being open to theunder side of said bottom; electric heating means in said partition; abase secured to the bottom of the chamber, said base being formed as ahousing having a closed top forming a closure for the greater part ofthe length of said partition; a switch in said housing controlling theheating means; means normally tending to open the switch; a post securedto the bottom of the compartment of smaller capacity, the top of thebase having an opening therein through which said post projects, and afusible link in said housing connected at one end to said post and atthe other end to the switch for retaining said switch closed.

5. A cooking vessel having a liquid receiving chamber, the bottom ofsaid chamber being bent upwardly to form a hollow partition, open to theunder side of said bottom; electric heating means in said partition; abase secured to the bottom of. the chamber, said base being formed as ahousing having a closed top forming a closure for the greater part ofthe length oi said partition; a switch in said housing controlling theheating means; means normally tending to open the switch; a post securedto the bottom of the chamber at one side of said partition, the top ofthe base having an opening therein through which said post projects, anda fusible link in said housing connected at one end to said post and atthe other end to the switch for retaining said switch closed, saidhousing having a detachable bottom.

JOHN A. HASHEK.

